./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b4d60c093ba6c9dcaff9815fcaab264eab148dbcfff5c12da0f56175eb222a22 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:57:01,318 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:57:01,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:57:01,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:57:01,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:57:01,362 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:57:01,364 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:57:01,367 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:57:01,370 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:57:01,372 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:57:01,374 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:57:01,377 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:57:01,378 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:57:01,382 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:57:01,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:57:01,389 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:57:01,391 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:57:01,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:57:01,402 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:57:01,409 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:57:01,417 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:57:01,418 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:57:01,420 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:57:01,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:57:01,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:57:01,431 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:57:01,431 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:57:01,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:57:01,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:57:01,436 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:57:01,437 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:57:01,438 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:57:01,440 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:57:01,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:57:01,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:57:01,444 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:57:01,444 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:57:01,445 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:57:01,445 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:57:01,446 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:57:01,447 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:57:01,447 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:57:01,491 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:57:01,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:57:01,492 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:57:01,492 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:57:01,492 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:57:01,493 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:57:01,493 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:57:01,493 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:57:01,493 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:57:01,494 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:57:01,494 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:57:01,494 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:57:01,494 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:57:01,495 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:57:01,495 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:57:01,496 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:57:01,496 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:57:01,496 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:57:01,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:57:01,497 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:57:01,497 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:57:01,497 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:57:01,497 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:57:01,498 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:57:01,498 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:57:01,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:57:01,498 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:57:01,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:57:01,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:57:01,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:57:01,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:57:01,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:57:01,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:57:01,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:57:01,500 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:57:01,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:57:01,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:57:01,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:57:01,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:57:01,501 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4d60c093ba6c9dcaff9815fcaab264eab148dbcfff5c12da0f56175eb222a22 [2021-11-07 01:57:01,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:57:01,783 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:57:01,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:57:01,788 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:57:01,789 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:57:01,790 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c [2021-11-07 01:57:01,855 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/data/2459201a1/f1077f446072423b886bd452b358da12/FLAG2218e6778 [2021-11-07 01:57:02,276 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:57:02,277 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c [2021-11-07 01:57:02,284 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/data/2459201a1/f1077f446072423b886bd452b358da12/FLAG2218e6778 [2021-11-07 01:57:02,673 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/data/2459201a1/f1077f446072423b886bd452b358da12 [2021-11-07 01:57:02,687 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:57:02,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:57:02,689 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:57:02,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:57:02,693 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:57:02,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:02" (1/1) ... [2021-11-07 01:57:02,695 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40ba8646 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:02, skipping insertion in model container [2021-11-07 01:57:02,695 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:02" (1/1) ... [2021-11-07 01:57:02,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:57:02,725 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:57:02,911 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[1494,1507] [2021-11-07 01:57:02,921 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[2698,2711] [2021-11-07 01:57:02,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:57:02,936 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:57:02,953 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[1494,1507] [2021-11-07 01:57:02,959 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[2698,2711] [2021-11-07 01:57:02,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:57:02,977 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:57:02,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:02 WrapperNode [2021-11-07 01:57:02,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:57:02,979 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:57:02,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:57:02,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:57:02,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:02" (1/1) ... [2021-11-07 01:57:02,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:02" (1/1) ... [2021-11-07 01:57:03,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:57:03,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:57:03,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:57:03,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:57:03,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:02" (1/1) ... [2021-11-07 01:57:03,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:02" (1/1) ... [2021-11-07 01:57:03,026 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:02" (1/1) ... [2021-11-07 01:57:03,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:02" (1/1) ... [2021-11-07 01:57:03,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:02" (1/1) ... [2021-11-07 01:57:03,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:02" (1/1) ... [2021-11-07 01:57:03,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:02" (1/1) ... [2021-11-07 01:57:03,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:57:03,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:57:03,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:57:03,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:57:03,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:02" (1/1) ... [2021-11-07 01:57:03,047 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:57:03,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:57:03,088 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:57:03,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:57:03,137 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:57:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:57:03,138 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:57:03,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:57:03,666 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:57:03,666 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-07 01:57:03,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:03 BoogieIcfgContainer [2021-11-07 01:57:03,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:57:03,670 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:57:03,670 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:57:03,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:57:03,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:57:02" (1/3) ... [2021-11-07 01:57:03,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2486a608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:03, skipping insertion in model container [2021-11-07 01:57:03,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:02" (2/3) ... [2021-11-07 01:57:03,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2486a608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:03, skipping insertion in model container [2021-11-07 01:57:03,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:03" (3/3) ... [2021-11-07 01:57:03,678 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.v+lhb-reducer.c [2021-11-07 01:57:03,684 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:57:03,684 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 01:57:03,741 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:57:03,747 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:57:03,747 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 01:57:03,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 31 states have (on average 1.7096774193548387) internal successors, (53), 33 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:03,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-07 01:57:03,763 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:03,763 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:03,765 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:03,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:03,777 INFO L85 PathProgramCache]: Analyzing trace with hash 610657513, now seen corresponding path program 1 times [2021-11-07 01:57:03,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:57:03,786 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177981734] [2021-11-07 01:57:03,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:03,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:57:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:57:03,883 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 01:57:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 01:57:03,931 INFO L133 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2021-11-07 01:57:03,933 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 01:57:03,934 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:57:03,936 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:57:03,937 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:57:03,940 INFO L731 BasicCegarLoop]: Path program histogram: [1] [2021-11-07 01:57:03,943 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:57:03,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:57:03 BoogieIcfgContainer [2021-11-07 01:57:03,974 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:57:03,974 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:57:03,975 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:57:03,975 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:57:03,975 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:03" (3/4) ... [2021-11-07 01:57:03,978 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 01:57:03,978 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:57:03,980 INFO L168 Benchmark]: Toolchain (without parser) took 1291.31 ms. Allocated memory is still 130.0 MB. Free memory was 100.6 MB in the beginning and 68.0 MB in the end (delta: 32.7 MB). Peak memory consumption was 29.9 MB. Max. memory is 16.1 GB. [2021-11-07 01:57:03,981 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 130.0 MB. Free memory is still 82.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:57:03,981 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.86 ms. Allocated memory is still 130.0 MB. Free memory was 100.4 MB in the beginning and 101.4 MB in the end (delta: -937.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:57:03,982 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.47 ms. Allocated memory is still 130.0 MB. Free memory was 101.4 MB in the beginning and 99.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 01:57:03,983 INFO L168 Benchmark]: Boogie Preprocessor took 22.31 ms. Allocated memory is still 130.0 MB. Free memory was 99.7 MB in the beginning and 98.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:57:03,984 INFO L168 Benchmark]: RCFGBuilder took 629.66 ms. Allocated memory is still 130.0 MB. Free memory was 98.4 MB in the beginning and 83.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-11-07 01:57:03,984 INFO L168 Benchmark]: TraceAbstraction took 303.61 ms. Allocated memory is still 130.0 MB. Free memory was 82.6 MB in the beginning and 68.2 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:57:03,985 INFO L168 Benchmark]: Witness Printer took 4.01 ms. Allocated memory is still 130.0 MB. Free memory was 68.2 MB in the beginning and 68.0 MB in the end (delta: 273.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:57:03,988 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 130.0 MB. Free memory is still 82.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.86 ms. Allocated memory is still 130.0 MB. Free memory was 100.4 MB in the beginning and 101.4 MB in the end (delta: -937.7 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.47 ms. Allocated memory is still 130.0 MB. Free memory was 101.4 MB in the beginning and 99.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.31 ms. Allocated memory is still 130.0 MB. Free memory was 99.7 MB in the beginning and 98.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 629.66 ms. Allocated memory is still 130.0 MB. Free memory was 98.4 MB in the beginning and 83.2 MB in the end (delta: 15.2 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 303.61 ms. Allocated memory is still 130.0 MB. Free memory was 82.6 MB in the beginning and 68.2 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.01 ms. Allocated memory is still 130.0 MB. Free memory was 68.2 MB in the beginning and 68.0 MB in the end (delta: 273.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 67]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of someBinaryFLOATComparisonOperation at line 49, overapproximation of someBinaryDOUBLEComparisonOperation at line 54, overapproximation of to_real at line 24, overapproximation of someBinaryArithmeticFLOAToperation at line 48. Possible FailurePath: [L1] int __return_main; [L12] int __tmp_160_0; [L13] int __tmp_160_1; [L14] int __tmp_160_2; [L15] int __return_165; [L18] float main__X; [L19] float main__Y; [L20] float main__S; [L21] float main__R; [L22] float main__D; [L23] int main__i; [L24] main__Y = 0 [L25] main__i = 0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0] [L26] COND TRUE main__i < 100000 [L28] main__X = __VERIFIER_nondet_float() [L29] main__D = __VERIFIER_nondet_float() [L30] int main____CPAchecker_TMP_0; VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0] [L31] COND TRUE main__X >= -128.0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0] [L33] COND TRUE main__X <= 128.0 [L35] main____CPAchecker_TMP_0 = 1 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0] [L36] COND TRUE main____CPAchecker_TMP_0 != 0 [L38] int main____CPAchecker_TMP_1; VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0] [L39] COND TRUE main__D >= 0.0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0] [L41] COND TRUE main__D <= 16.0 [L43] main____CPAchecker_TMP_1 = 1 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0] [L44] COND TRUE main____CPAchecker_TMP_1 != 0 [L46] main__S = main__Y [L47] main__Y = main__X [L48] main__R = main__X - main__S [L49] COND TRUE main__R <= (-main__D) [L51] main__Y = main__S - main__D [L53] int main____CPAchecker_TMP_2; VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0] [L54] COND FALSE !(main__Y >= -129.0) VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0] [L205] main____CPAchecker_TMP_2 = 0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0] [L61] int __tmp_1; [L62] __tmp_1 = main____CPAchecker_TMP_2 [L63] int __VERIFIER_assert__cond; [L64] __VERIFIER_assert__cond = __tmp_1 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0] [L65] COND TRUE __VERIFIER_assert__cond == 0 VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0] [L67] reach_error() VAL [__return_165=0, __return_main=0, __tmp_160_0=0, __tmp_160_1=0, __tmp_160_2=0] - UnprovableResult [Line: 123]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 01:57:04,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8 --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b4d60c093ba6c9dcaff9815fcaab264eab148dbcfff5c12da0f56175eb222a22 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:57:06,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:57:06,407 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:57:06,453 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:57:06,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:57:06,458 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:57:06,460 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:57:06,464 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:57:06,467 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:57:06,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:57:06,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:57:06,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:57:06,477 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:57:06,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:57:06,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:57:06,480 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:57:06,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:57:06,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:57:06,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:57:06,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:57:06,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:57:06,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:57:06,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:57:06,491 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:57:06,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:57:06,495 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:57:06,496 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:57:06,497 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:57:06,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:57:06,498 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:57:06,499 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:57:06,500 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:57:06,500 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:57:06,501 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:57:06,502 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:57:06,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:57:06,503 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:57:06,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:57:06,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:57:06,515 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:57:06,515 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:57:06,517 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-07 01:57:06,558 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:57:06,558 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:57:06,560 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:57:06,560 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:57:06,560 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:57:06,560 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:57:06,561 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:57:06,561 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:57:06,561 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:57:06,562 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:57:06,563 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:57:06,564 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:57:06,564 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:57:06,564 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:57:06,564 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:57:06,564 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:57:06,564 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:57:06,565 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 01:57:06,565 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 01:57:06,565 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:57:06,565 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:57:06,565 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:57:06,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:57:06,566 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:57:06,566 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 01:57:06,566 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:57:06,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:57:06,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:57:06,567 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:57:06,567 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:57:06,567 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-07 01:57:06,567 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 01:57:06,568 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:57:06,568 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:57:06,568 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:57:06,569 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b4d60c093ba6c9dcaff9815fcaab264eab148dbcfff5c12da0f56175eb222a22 [2021-11-07 01:57:06,924 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:57:06,956 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:57:06,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:57:06,960 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:57:06,961 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:57:06,962 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c [2021-11-07 01:57:07,035 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/data/52265324b/2e9fac9293194d839bb1d851a2ec76fd/FLAG0262016ec [2021-11-07 01:57:07,663 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:57:07,664 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c [2021-11-07 01:57:07,676 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/data/52265324b/2e9fac9293194d839bb1d851a2ec76fd/FLAG0262016ec [2021-11-07 01:57:07,968 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/data/52265324b/2e9fac9293194d839bb1d851a2ec76fd [2021-11-07 01:57:07,971 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:57:07,973 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:57:07,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:57:07,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:57:07,980 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:57:07,980 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:07" (1/1) ... [2021-11-07 01:57:07,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bf891b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:07, skipping insertion in model container [2021-11-07 01:57:07,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:07" (1/1) ... [2021-11-07 01:57:07,990 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:57:08,016 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:57:08,226 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[1494,1507] [2021-11-07 01:57:08,244 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[2698,2711] [2021-11-07 01:57:08,266 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:57:08,278 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:57:08,301 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[1494,1507] [2021-11-07 01:57:08,307 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/sv-benchmarks/c/float-benchs/rlim_invariant.c.v+lhb-reducer.c[2698,2711] [2021-11-07 01:57:08,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:57:08,343 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:57:08,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:08 WrapperNode [2021-11-07 01:57:08,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:57:08,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:57:08,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:57:08,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:57:08,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:08" (1/1) ... [2021-11-07 01:57:08,391 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:08" (1/1) ... [2021-11-07 01:57:08,424 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:57:08,425 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:57:08,425 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:57:08,425 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:57:08,432 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:08" (1/1) ... [2021-11-07 01:57:08,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:08" (1/1) ... [2021-11-07 01:57:08,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:08" (1/1) ... [2021-11-07 01:57:08,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:08" (1/1) ... [2021-11-07 01:57:08,458 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:08" (1/1) ... [2021-11-07 01:57:08,460 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:08" (1/1) ... [2021-11-07 01:57:08,473 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:08" (1/1) ... [2021-11-07 01:57:08,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:57:08,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:57:08,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:57:08,477 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:57:08,478 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:08" (1/1) ... [2021-11-07 01:57:08,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:57:08,508 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:57:08,522 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:57:08,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:57:08,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 01:57:08,569 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:57:08,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:57:08,569 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:57:10,930 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:57:10,930 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-07 01:57:10,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:10 BoogieIcfgContainer [2021-11-07 01:57:10,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:57:10,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:57:10,933 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:57:10,936 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:57:10,936 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:57:07" (1/3) ... [2021-11-07 01:57:10,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13444d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:10, skipping insertion in model container [2021-11-07 01:57:10,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:08" (2/3) ... [2021-11-07 01:57:10,937 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13444d5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:10, skipping insertion in model container [2021-11-07 01:57:10,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:10" (3/3) ... [2021-11-07 01:57:10,939 INFO L111 eAbstractionObserver]: Analyzing ICFG rlim_invariant.c.v+lhb-reducer.c [2021-11-07 01:57:10,944 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:57:10,944 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-07 01:57:10,989 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:57:10,994 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:57:10,994 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-07 01:57:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand has 42 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 41 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:57:11,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 01:57:11,013 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:57:11,013 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:57:11,014 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:57:11,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:57:11,020 INFO L85 PathProgramCache]: Analyzing trace with hash 346658074, now seen corresponding path program 1 times [2021-11-07 01:57:11,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 01:57:11,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440580567] [2021-11-07 01:57:11,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:57:11,033 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 01:57:11,033 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 01:57:11,041 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 01:57:11,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 01:57:11,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:57:11,255 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-07 01:57:11,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:57:22,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:57:22,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:58:24,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:58:24,137 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 01:58:24,137 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440580567] [2021-11-07 01:58:24,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440580567] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:58:24,138 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:58:24,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2021-11-07 01:58:24,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362771753] [2021-11-07 01:58:24,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:58:24,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 01:58:24,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:58:24,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=70, Unknown=6, NotChecked=0, Total=110 [2021-11-07 01:58:24,162 INFO L87 Difference]: Start difference. First operand has 42 states, 39 states have (on average 1.6666666666666667) internal successors, (65), 41 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:59:09,712 WARN L207 SmtUtils]: Spent 19.05 s on a formula simplification that was a NOOP. DAG size: 30 [2021-11-07 01:59:42,683 WARN L207 SmtUtils]: Spent 16.15 s on a formula simplification that was a NOOP. DAG size: 28 [2021-11-07 02:05:35,026 WARN L860 $PredicateComparison]: unable to prove that (and (forall ((ULTIMATE.start_main_~main__D~0 (_ FloatingPoint 8 24))) (or (not (fp.leq ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~main__D~0) ((_ to_fp 11 53) c_currentRoundingMode 16.0))) (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__Y~0 ULTIMATE.start_main_~main__D~0)) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 129.0))) (forall ((ULTIMATE.start_main_~main__R~0 (_ FloatingPoint 8 24))) (not (fp.leq ULTIMATE.start_main_~main__R~0 (fp.neg ULTIMATE.start_main_~main__D~0)))))) (= c_currentRoundingMode roundNearestTiesToEven) (or (fp.geq ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__Y~0 c_ULTIMATE.start_main_~main__D~0)) (fp.neg ((_ to_fp 11 53) c_currentRoundingMode 129.0))) (forall ((ULTIMATE.start_main_~main__R~0 (_ FloatingPoint 8 24))) (not (fp.leq ULTIMATE.start_main_~main__R~0 (fp.neg c_ULTIMATE.start_main_~main__D~0)))))) is different from true [2021-11-07 02:06:25,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:25,843 INFO L93 Difference]: Finished difference Result 184 states and 252 transitions. [2021-11-07 02:06:25,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 02:06:25,855 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 02:06:25,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:25,865 INFO L225 Difference]: With dead ends: 184 [2021-11-07 02:06:25,865 INFO L226 Difference]: Without dead ends: 123 [2021-11-07 02:06:25,868 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 134.0s TimeCoverageRelationStatistics Valid=89, Invalid=164, Unknown=23, NotChecked=30, Total=306 [2021-11-07 02:06:25,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-07 02:06:25,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 41. [2021-11-07 02:06:25,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.358974358974359) internal successors, (53), 40 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:25,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2021-11-07 02:06:25,902 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 16 [2021-11-07 02:06:25,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:25,903 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2021-11-07 02:06:25,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:25,903 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2021-11-07 02:06:25,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-07 02:06:25,904 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:25,904 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:06:25,916 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-07 02:06:26,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:26,105 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:06:26,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:26,106 INFO L85 PathProgramCache]: Analyzing trace with hash 257195701, now seen corresponding path program 1 times [2021-11-07 02:06:26,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:26,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1166304195] [2021-11-07 02:06:26,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:26,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:26,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:26,122 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:26,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 02:06:26,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:26,296 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 02:06:26,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:26,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:06:26,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:06:26,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:06:26,541 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:06:26,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1166304195] [2021-11-07 02:06:26,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1166304195] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:06:26,542 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:06:26,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 02:06:26,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882235765] [2021-11-07 02:06:26,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 02:06:26,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:06:26,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 02:06:26,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 02:06:26,545 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:26,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 02:06:26,627 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2021-11-07 02:06:26,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 02:06:26,628 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-11-07 02:06:26,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 02:06:26,631 INFO L225 Difference]: With dead ends: 66 [2021-11-07 02:06:26,634 INFO L226 Difference]: Without dead ends: 64 [2021-11-07 02:06:26,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 02:06:26,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-11-07 02:06:26,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 43. [2021-11-07 02:06:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.3414634146341464) internal successors, (55), 42 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:26,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2021-11-07 02:06:26,653 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 16 [2021-11-07 02:06:26,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 02:06:26,655 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2021-11-07 02:06:26,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:06:26,656 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2021-11-07 02:06:26,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-11-07 02:06:26,662 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 02:06:26,662 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 02:06:26,679 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 02:06:26,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 [2021-11-07 02:06:26,876 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 02:06:26,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 02:06:26,876 INFO L85 PathProgramCache]: Analyzing trace with hash -533932591, now seen corresponding path program 1 times [2021-11-07 02:06:26,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-07 02:06:26,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [729268588] [2021-11-07 02:06:26,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 02:06:26,878 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 02:06:26,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/mathsat [2021-11-07 02:06:26,878 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 02:06:26,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_325e5521-15cf-449e-9f9a-016fb8643dba/bin/utaipan-UUZaoUuFF8/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 02:06:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 02:06:27,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 02:06:27,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 02:06:38,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:06:38,710 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 02:07:23,437 WARN L207 SmtUtils]: Spent 6.24 s on a formula simplification that was a NOOP. DAG size: 17 [2021-11-07 02:08:16,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 02:08:16,755 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-07 02:08:16,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [729268588] [2021-11-07 02:08:16,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [729268588] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 02:08:16,755 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 02:08:16,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 8] imperfect sequences [] total 14 [2021-11-07 02:08:16,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530207155] [2021-11-07 02:08:16,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-07 02:08:16,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-07 02:08:16,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-07 02:08:16,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=122, Unknown=4, NotChecked=0, Total=182 [2021-11-07 02:08:16,758 INFO L87 Difference]: Start difference. First operand 43 states and 55 transitions. Second operand has 14 states, 14 states have (on average 2.142857142857143) internal successors, (30), 14 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 02:08:54,288 WARN L207 SmtUtils]: Spent 19.74 s on a formula simplification. DAG size of input: 32 DAG size of output: 23 [2021-11-07 02:09:32,626 WARN L207 SmtUtils]: Spent 22.51 s on a formula simplification that was a NOOP. DAG size: 27 [2021-11-07 02:09:53,532 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__D~0))) (let ((.cse1 (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 16.0)))) (and (fp.geq .cse0 (_ +zero 11 53)) .cse1 (forall ((ULTIMATE.start_main_~main__D~0 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~main__D~0)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__Y~0 ULTIMATE.start_main_~main__D~0))) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode 129.0))) (or (not (fp.geq .cse2 (_ +zero 11 53))) (not (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 16.0))) (not (fp.geq .cse3 (fp.neg .cse4))) (fp.leq .cse3 .cse4)))) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__Y~0 c_ULTIMATE.start_main_~main__D~0))) (.cse6 ((_ to_fp 11 53) c_currentRoundingMode 129.0))) (or (not .cse1) (not (fp.geq .cse5 (fp.neg .cse6))) (fp.leq .cse5 .cse6))) (= c_ULTIMATE.start_main_~main__S~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from false [2021-11-07 02:09:55,569 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 ((_ to_fp 11 53) c_currentRoundingMode c_ULTIMATE.start_main_~main__D~0))) (let ((.cse1 (fp.leq .cse0 ((_ to_fp 11 53) c_currentRoundingMode 16.0)))) (and (fp.geq .cse0 (_ +zero 11 53)) .cse1 (forall ((ULTIMATE.start_main_~main__D~0 (_ FloatingPoint 8 24))) (let ((.cse2 ((_ to_fp 11 53) c_currentRoundingMode ULTIMATE.start_main_~main__D~0)) (.cse3 ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__Y~0 ULTIMATE.start_main_~main__D~0))) (.cse4 ((_ to_fp 11 53) c_currentRoundingMode 129.0))) (or (not (fp.geq .cse2 (_ +zero 11 53))) (not (fp.leq .cse2 ((_ to_fp 11 53) c_currentRoundingMode 16.0))) (not (fp.geq .cse3 (fp.neg .cse4))) (fp.leq .cse3 .cse4)))) (= c_currentRoundingMode roundNearestTiesToEven) (let ((.cse5 ((_ to_fp 11 53) c_currentRoundingMode (fp.sub c_currentRoundingMode c_ULTIMATE.start_main_~main__Y~0 c_ULTIMATE.start_main_~main__D~0))) (.cse6 ((_ to_fp 11 53) c_currentRoundingMode 129.0))) (or (not .cse1) (not (fp.geq .cse5 (fp.neg .cse6))) (fp.leq .cse5 .cse6))) (= c_ULTIMATE.start_main_~main__S~0 ((_ to_fp 8 24) c_currentRoundingMode (_ bv0 32)))))) is different from true